git.maemo.org Git - gonvert/blob - src/gonvert_qt.py

   1 #!/usr/bin/env python
   2 # -*- coding: UTF8 -*-
   3
   4 from __future__ import with_statement
   5
   6 import sys
   7 import os
   8 import math
   9 import simplejson
  10 import logging
  11
  12 from PyQt4 import QtGui
  13 from PyQt4 import QtCore
  14
  15 import constants
  16 from util import misc as misc_utils
  17 import unit_data
  18
  19
  20 _moduleLogger = logging.getLogger("gonvert_glade")
  21
  22
  23 def change_menu_label(widgets, labelname, newtext):
  24         item_label = widgets.get_widget(labelname).get_children()[0]
  25         item_label.set_text(newtext)
  26
  27
  28 def split_number(number):
  29         try:
  30                 fractional, integer = math.modf(number)
  31         except TypeError:
  32                 integerDisplay = number
  33                 fractionalDisplay = ""
  34         else:
  35                 integerDisplay = str(integer)
  36                 fractionalDisplay = str(fractional)
  37                 if "e+" in integerDisplay:
  38                         integerDisplay = number
  39                         fractionalDisplay = ""
  40                 elif "e-" in fractionalDisplay and 0.0 < integer:
  41                         integerDisplay = number
  42                         fractionalDisplay = ""
  43                 elif "e-" in fractionalDisplay:
  44                         integerDisplay = ""
  45                         fractionalDisplay = number
  46                 else:
  47                         integerDisplay = integerDisplay.split(".", 1)[0] + "."
  48                         fractionalDisplay = fractionalDisplay.rsplit(".", 1)[-1]
  49
  50         return integerDisplay, fractionalDisplay
  51
  52
  53 class Gonvert(object):
  54
  55         _DATA_PATHS = [
  56                 os.path.dirname(__file__),
  57                 os.path.join(os.path.dirname(__file__), "../data"),
  58                 os.path.join(os.path.dirname(__file__), "../lib"),
  59                 '/usr/share/gonvert',
  60                 '/usr/lib/gonvert',
  61         ]
  62
  63         def __init__(self, app):
  64                 self._dataPath = ""
  65                 for dataPath in self._DATA_PATHS:
  66                         appIconPath = os.path.join(dataPath, "pixmaps", "gonvert.png")
  67                         if os.path.isfile(appIconPath):
  68                                 self._dataPath = dataPath
  69                                 break
  70                 else:
  71                         raise RuntimeError("UI Descriptor not found!")
  72                 self._app = app
  73                 self._appIconPath = appIconPath
  74                 self._recent = []
  75                 self._hiddenCategories = set()
  76                 self._hiddenUnits = {}
  77                 self._clipboard = QtGui.QApplication.clipboard()
  78
  79                 self._jumpWindow = None
  80                 self._recentWindow = None
  81                 self._catWindow = None
  82
  83                 self._jumpAction = QtGui.QAction(None)
  84                 self._jumpAction.setText("Quick Jump")
  85                 self._jumpAction.setStatusTip("Search for a unit and jump straight to it")
  86                 self._jumpAction.setToolTip("Search for a unit and jump straight to it")
  87                 self._jumpAction.setShortcut(QtGui.QKeySequence("CTRL+j"))
  88                 self._jumpAction.triggered.connect(self._on_jump_start)
  89
  90                 self._recentAction = QtGui.QAction(None)
  91                 self._recentAction.setText("Recent Units")
  92                 self._recentAction.setStatusTip("View the recent units")
  93                 self._recentAction.setToolTip("View the recent units")
  94                 self._recentAction.setShortcut(QtGui.QKeySequence("CTRL+r"))
  95                 self._recentAction.triggered.connect(self._on_recent_start)
  96
  97                 self._fullscreenAction = QtGui.QAction(None)
  98                 self._fullscreenAction.setText("Fullscreen")
  99                 self._fullscreenAction.setCheckable(True)
 100                 self._fullscreenAction.setShortcut(QtGui.QKeySequence("CTRL+Enter"))
 101                 self._fullscreenAction.toggled.connect(self._on_toggle_fullscreen)
 102
 103                 self._showFavoritesAction = QtGui.QAction(None)
 104                 self._showFavoritesAction.setCheckable(True)
 105                 self._showFavoritesAction.setText("Favorites Only")
 106
 107                 self._logAction = QtGui.QAction(None)
 108                 self._logAction.setText("Log")
 109                 self._logAction.setShortcut(QtGui.QKeySequence("CTRL+l"))
 110                 self._logAction.triggered.connect(self._on_log)
 111
 112                 self._quitAction = QtGui.QAction(None)
 113                 self._quitAction.setText("Quit")
 114                 self._quitAction.setShortcut(QtGui.QKeySequence("CTRL+q"))
 115                 self._quitAction.triggered.connect(self._on_quit)
 116
 117                 self._app.lastWindowClosed.connect(self._on_app_quit)
 118                 self.request_category()
 119                 self.load_settings()
 120
 121         def request_category(self):
 122                 if self._catWindow is not None:
 123                         self._catWindow.close()
 124                         self._catWindow = None
 125                 self._catWindow = CategoryWindow(None, self)
 126                 self._catWindow.window.destroyed.connect(lambda obj = None: self._on_child_close("_catWindow", obj))
 127                 return self._catWindow
 128
 129         def search_units(self):
 130                 if self._jumpWindow is not None:
 131                         self._jumpWindow.close()
 132                         self._jumpWindow = None
 133                 self._jumpWindow = QuickJump(None, self)
 134                 self._jumpWindow.window.destroyed.connect(lambda obj = None: self._on_child_close("_jumpWindow", obj))
 135                 return self._jumpWindow
 136
 137         def show_recent(self):
 138                 if self._recentWindow is not None:
 139                         self._recentWindow.close()
 140                         self._recentWindow = None
 141                 self._recentWindow = Recent(None, self)
 142                 self._recentWindow.window.destroyed.connect(lambda obj = None: self._on_child_close("_recentWindow", obj))
 143                 return self._recentWindow
 144
 145         def add_recent(self, categoryName, unitName):
 146                 catUnit = categoryName, unitName
 147                 try:
 148                         self._recent.remove(catUnit)
 149                 except ValueError:
 150                         pass # ignore if its not already in the recent history
 151                 assert catUnit not in self._recent
 152                 self._recent.append(catUnit)
 153
 154         def get_recent_unit(self, categoryName):
 155                 for catName, unitName in reversed(self._recent):
 156                         if catName == categoryName:
 157                                 return unitName
 158                 else:
 159                         return ""
 160
 161         def get_recent(self):
 162                 return reversed(self._recent)
 163
 164         @property
 165         def hiddenCategories(self):
 166                 return self._hiddenCategories
 167
 168         def get_hidden_units(self, categoryName):
 169                 try:
 170                         return self._hiddenUnits[categoryName]
 171                 except KeyError:
 172                         self._hiddenUnits[categoryName] = set()
 173                         return self._hiddenUnits[categoryName]
 174
 175         def load_settings(self):
 176                 try:
 177                         with open(constants._user_settings_, "r") as settingsFile:
 178                                 settings = simplejson.load(settingsFile)
 179                 except IOError, e:
 180                         _moduleLogger.info("No settings")
 181                         settings = {}
 182                 except ValueError:
 183                         _moduleLogger.info("Settings were corrupt")
 184                         settings = {}
 185
 186                 self._fullscreenAction.setChecked(settings.get("isFullScreen", False))
 187
 188                 recent = settings.get("recent", self._recent)
 189                 for category, unit in recent:
 190                         self.add_recent(category, unit)
 191
 192                 self._hiddenCategories = set(settings.get("hiddenCategories", set()))
 193                 self._hiddenUnits = dict(
 194                         (catName, set(units))
 195                         for (catName, units) in settings.get("hiddenUnits", {}).iteritems()
 196                 )
 197
 198                 self._showFavoritesAction.setChecked(settings.get("showFavorites", True))
 199
 200                 if self._recent:
 201                         self._catWindow.select_category(self._recent[-1][0])
 202
 203         def save_settings(self):
 204                 settings = {
 205                         "isFullScreen": self._fullscreenAction.isChecked(),
 206                         "recent": self._recent,
 207                         "hiddenCategories": list(self._hiddenCategories),
 208                         "hiddenUnits": dict(
 209                                 (catName, list(units))
 210                                 for (catName, units) in self._hiddenUnits.iteritems()
 211                         ),
 212                         "showFavorites": self._showFavoritesAction.isChecked(),
 213                 }
 214                 with open(constants._user_settings_, "w") as settingsFile:
 215                         simplejson.dump(settings, settingsFile)
 216
 217         @property
 218         def appIconPath(self):
 219                 return self._appIconPath
 220
 221         @property
 222         def jumpAction(self):
 223                 return self._jumpAction
 224
 225         @property
 226         def recentAction(self):
 227                 return self._recentAction
 228
 229         @property
 230         def fullscreenAction(self):
 231                 return self._fullscreenAction
 232
 233         @property
 234         def logAction(self):
 235                 return self._logAction
 236
 237         @property
 238         def quitAction(self):
 239                 return self._quitAction
 240
 241         @property
 242         def showFavoritesAction(self):
 243                 return self._showFavoritesAction
 244
 245         def _walk_children(self):
 246                 if self._catWindow is not None:
 247                         yield self._catWindow
 248                 if self._jumpWindow is not None:
 249                         yield self._jumpWindow
 250                 if self._recentWindow is not None:
 251                         yield self._recentWindow
 252
 253         @misc_utils.log_exception(_moduleLogger)
 254         def _on_app_quit(self, checked = False):
 255                 self.save_settings()
 256
 257         @misc_utils.log_exception(_moduleLogger)
 258         def _on_child_close(self, name, obj = None):
 259                 if not hasattr(self, name):
 260                         _moduleLogger.info("Something weird going on when we don't have a %s" % name)
 261                         return
 262                 setattr(self, name, None)
 263
 264         @misc_utils.log_exception(_moduleLogger)
 265         def _on_toggle_fullscreen(self, checked = False):
 266                 for window in self._walk_children():
 267                         window.set_fullscreen(checked)
 268
 269         @misc_utils.log_exception(_moduleLogger)
 270         def _on_jump_start(self, checked = False):
 271                 self.search_units()
 272
 273         @misc_utils.log_exception(_moduleLogger)
 274         def _on_recent_start(self, checked = False):
 275                 self.show_recent()
 276
 277         @misc_utils.log_exception(_moduleLogger)
 278         def _on_log(self, checked = False):
 279                 with open(constants._user_logpath_, "r") as f:
 280                         logLines = f.xreadlines()
 281                         log = "".join(logLines)
 282                         self._clipboard.setText(log)
 283
 284         @misc_utils.log_exception(_moduleLogger)
 285         def _on_quit(self, checked = False):
 286                 for window in self._walk_children():
 287                         window.close()
 288
 289
 290 class QuickJump(object):
 291
 292         MINIMAL_ENTRY = 3
 293
 294         def __init__(self, parent, app):
 295                 self._app = app
 296
 297                 self._searchLabel = QtGui.QLabel("Search:")
 298                 self._searchEntry = QtGui.QLineEdit("")
 299                 self._searchEntry.textEdited.connect(self._on_search_edited)
 300
 301                 self._entryLayout = QtGui.QHBoxLayout()
 302                 self._entryLayout.addWidget(self._searchLabel)
 303                 self._entryLayout.addWidget(self._searchEntry)
 304
 305                 self._resultsBox = QtGui.QTreeWidget()
 306                 self._resultsBox.setHeaderLabels(["Categories", "Units"])
 307                 self._resultsBox.setHeaderHidden(True)
 308                 self._resultsBox.setAlternatingRowColors(True)
 309                 self._resultsBox.itemClicked.connect(self._on_result_clicked)
 310
 311                 self._layout = QtGui.QVBoxLayout()
 312                 self._layout.addLayout(self._entryLayout)
 313                 self._layout.addWidget(self._resultsBox)
 314
 315                 centralWidget = QtGui.QWidget()
 316                 centralWidget.setLayout(self._layout)
 317
 318                 self._window = QtGui.QMainWindow(parent)
 319                 self._window.setAttribute(QtCore.Qt.WA_DeleteOnClose, True)
 320                 if parent is not None:
 321                         self._window.setWindowModality(QtCore.Qt.WindowModal)
 322                 self._window.setWindowTitle("%s - Quick Jump" % constants.__pretty_app_name__)
 323                 self._window.setWindowIcon(QtGui.QIcon(self._app.appIconPath))
 324                 self._window.setCentralWidget(centralWidget)
 325
 326                 self._closeWindowAction = QtGui.QAction(None)
 327                 self._closeWindowAction.setText("Window")
 328                 self._closeWindowAction.setShortcut(QtGui.QKeySequence("CTRL+w"))
 329                 self._closeWindowAction.triggered.connect(self._on_close_window)
 330
 331                 fileMenu = self._window.menuBar().addMenu("&Units")
 332                 fileMenu.addAction(self._closeWindowAction)
 333                 fileMenu.addAction(self._app.quitAction)
 334
 335                 viewMenu = self._window.menuBar().addMenu("&View")
 336                 viewMenu.addAction(self._app.fullscreenAction)
 337
 338                 self._window.addAction(self._app.logAction)
 339
 340                 self.set_fullscreen(self._app.fullscreenAction.isChecked())
 341                 self._window.show()
 342
 343         @property
 344         def window(self):
 345                 return self._window
 346
 347         def close(self):
 348                 self._window.close()
 349
 350         def set_fullscreen(self, isFullscreen):
 351                 if isFullscreen:
 352                         self._window.showFullScreen()
 353                 else:
 354                         self._window.showNormal()
 355
 356         @misc_utils.log_exception(_moduleLogger)
 357         def _on_close_window(self, checked = True):
 358                 self.close()
 359
 360         @misc_utils.log_exception(_moduleLogger)
 361         def _on_result_clicked(self, item, columnIndex):
 362                 categoryName = unicode(item.text(0))
 363                 unitName = unicode(item.text(1))
 364                 catWindow = self._app.request_category()
 365                 unitsWindow = catWindow.select_category(categoryName)
 366                 unitsWindow.select_unit(unitName)
 367                 self.close()
 368
 369         @misc_utils.log_exception(_moduleLogger)
 370         def _on_search_edited(self, *args):
 371                 userInput = self._searchEntry.text()
 372                 if len(userInput) <  self.MINIMAL_ENTRY:
 373                         return
 374
 375                 self._resultsBox.clear()
 376                 lowerInput = str(userInput).lower()
 377                 for catIndex, category in enumerate(unit_data.UNIT_CATEGORIES):
 378                         units = unit_data.get_units(category)
 379                         for unitIndex, unit in enumerate(units):
 380                                 loweredUnit = unit.lower()
 381                                 if lowerInput in loweredUnit:
 382                                         twi = QtGui.QTreeWidgetItem(self._resultsBox)
 383                                         twi.setText(0, category)
 384                                         twi.setText(1, unit)
 385
 386
 387 class Recent(object):
 388
 389         def __init__(self, parent, app):
 390                 self._app = app
 391
 392                 self._resultsBox = QtGui.QTreeWidget()
 393                 self._resultsBox.setHeaderLabels(["Categories", "Units"])
 394                 self._resultsBox.setHeaderHidden(True)
 395                 self._resultsBox.setAlternatingRowColors(True)
 396                 self._resultsBox.itemClicked.connect(self._on_result_clicked)
 397
 398                 self._layout = QtGui.QVBoxLayout()
 399                 self._layout.addWidget(self._resultsBox)
 400
 401                 centralWidget = QtGui.QWidget()
 402                 centralWidget.setLayout(self._layout)
 403
 404                 self._window = QtGui.QMainWindow(parent)
 405                 self._window.setAttribute(QtCore.Qt.WA_DeleteOnClose, True)
 406                 if parent is not None:
 407                         self._window.setWindowModality(QtCore.Qt.WindowModal)
 408                 self._window.setWindowTitle("%s - Recent" % constants.__pretty_app_name__)
 409                 self._window.setWindowIcon(QtGui.QIcon(self._app.appIconPath))
 410                 self._window.setCentralWidget(centralWidget)
 411
 412                 for cat, unit in self._app.get_recent():
 413                         twi = QtGui.QTreeWidgetItem(self._resultsBox)
 414                         twi.setText(0, cat)
 415                         twi.setText(1, unit)
 416
 417                 self._closeWindowAction = QtGui.QAction(None)
 418                 self._closeWindowAction.setText("Window")
 419                 self._closeWindowAction.setShortcut(QtGui.QKeySequence("CTRL+w"))
 420                 self._closeWindowAction.triggered.connect(self._on_close_window)
 421
 422                 fileMenu = self._window.menuBar().addMenu("&Units")
 423                 fileMenu.addAction(self._closeWindowAction)
 424                 fileMenu.addAction(self._app.quitAction)
 425
 426                 viewMenu = self._window.menuBar().addMenu("&View")
 427                 viewMenu.addAction(self._app.fullscreenAction)
 428
 429                 self._window.addAction(self._app.logAction)
 430
 431                 self.set_fullscreen(self._app.fullscreenAction.isChecked())
 432                 self._window.show()
 433
 434         @property
 435         def window(self):
 436                 return self._window
 437
 438         def close(self):
 439                 self._window.close()
 440
 441         def set_fullscreen(self, isFullscreen):
 442                 if isFullscreen:
 443                         self._window.showFullScreen()
 444                 else:
 445                         self._window.showNormal()
 446
 447         @misc_utils.log_exception(_moduleLogger)
 448         def _on_close_window(self, checked = True):
 449                 self.close()
 450
 451         @misc_utils.log_exception(_moduleLogger)
 452         def _on_result_clicked(self, item, columnIndex):
 453                 categoryName = unicode(item.text(0))
 454                 unitName = unicode(item.text(1))
 455                 catWindow = self._app.request_category()
 456                 unitsWindow = catWindow.select_category(categoryName)
 457                 unitsWindow.select_unit(unitName)
 458                 self.close()
 459
 460
 461 class FavoriteCategoriesWindow(object):
 462
 463         # @todo Add All, None, and Invert actions
 464
 465         def __init__(self, parent, app, source, hidden):
 466                 self._app = app
 467                 self._source = list(source)
 468                 self._hidden = hidden
 469
 470                 self._categories = QtGui.QTreeWidget()
 471                 self._categories.setHeaderLabels(["Categories"])
 472                 self._categories.setHeaderHidden(True)
 473                 self._categories.setAlternatingRowColors(True)
 474                 self._categories.setSelectionBehavior(QtGui.QAbstractItemView.SelectRows)
 475                 self._categories.setSelectionMode(QtGui.QAbstractItemView.MultiSelection)
 476                 for catName in self._source:
 477                         twi = QtGui.QTreeWidgetItem(self._categories)
 478                         twi.setText(0, catName)
 479                         if catName not in self._hidden:
 480                                 self._categories.setItemSelected(twi, True)
 481                 self._selection = self._categories.selectionModel()
 482                 self._selection.selectionChanged.connect(self._on_selection_changed)
 483
 484                 self._layout = QtGui.QVBoxLayout()
 485                 self._layout.addWidget(self._categories)
 486
 487                 centralWidget = QtGui.QWidget()
 488                 centralWidget.setLayout(self._layout)
 489
 490                 self._window = QtGui.QMainWindow(parent)
 491                 self._window.setAttribute(QtCore.Qt.WA_DeleteOnClose, True)
 492                 if parent is not None:
 493                         self._window.setWindowModality(QtCore.Qt.WindowModal)
 494                 self._window.setWindowTitle("%s - Favorites" % constants.__pretty_app_name__)
 495                 self._window.setWindowIcon(QtGui.QIcon(self._app.appIconPath))
 496                 self._window.setCentralWidget(centralWidget)
 497
 498                 self._closeWindowAction = QtGui.QAction(None)
 499                 self._closeWindowAction.setText("Window")
 500                 self._closeWindowAction.setShortcut(QtGui.QKeySequence("CTRL+w"))
 501                 self._closeWindowAction.triggered.connect(self._on_close_window)
 502
 503                 fileMenu = self._window.menuBar().addMenu("&Units")
 504                 fileMenu.addAction(self._closeWindowAction)
 505                 fileMenu.addAction(self._app.quitAction)
 506
 507                 viewMenu = self._window.menuBar().addMenu("&View")
 508                 viewMenu.addAction(self._app.fullscreenAction)
 509
 510                 self._window.addAction(self._app.logAction)
 511
 512                 self.set_fullscreen(self._app.fullscreenAction.isChecked())
 513                 self._window.show()
 514
 515         @property
 516         def window(self):
 517                 return self._window
 518
 519         def close(self):
 520                 self._window.close()
 521
 522         def set_fullscreen(self, isFullscreen):
 523                 if isFullscreen:
 524                         self._window.showFullScreen()
 525                 else:
 526                         self._window.showNormal()
 527
 528         @misc_utils.log_exception(_moduleLogger)
 529         def _on_selection_changed(self, selected, deselected):
 530                 self._hidden.clear()
 531                 selectedNames = set(
 532                         str(item.text(0))
 533                         for item in self._categories.selectedItems()
 534                 )
 535                 for name in self._source:
 536                         if name not in selectedNames:
 537                                 self._hidden.add(name)
 538
 539         @misc_utils.log_exception(_moduleLogger)
 540         def _on_close_window(self, checked = True):
 541                 self.close()
 542
 543
 544 class CategoryWindow(object):
 545
 546         def __init__(self, parent, app):
 547                 self._app = app
 548                 self._unitWindow = None
 549                 self._favoritesWindow = None
 550
 551                 self._categories = QtGui.QTreeWidget()
 552                 self._categories.setHeaderLabels(["Categories"])
 553                 self._categories.itemClicked.connect(self._on_category_clicked)
 554                 self._categories.setHeaderHidden(True)
 555                 self._categories.setAlternatingRowColors(True)
 556                 for catName in unit_data.UNIT_CATEGORIES:
 557                         twi = QtGui.QTreeWidgetItem(self._categories)
 558                         twi.setText(0, catName)
 559
 560                 self._layout = QtGui.QVBoxLayout()
 561                 self._layout.addWidget(self._categories)
 562
 563                 centralWidget = QtGui.QWidget()
 564                 centralWidget.setLayout(self._layout)
 565
 566                 self._window = QtGui.QMainWindow(parent)
 567                 self._window.setAttribute(QtCore.Qt.WA_DeleteOnClose, True)
 568                 if parent is not None:
 569                         self._window.setWindowModality(QtCore.Qt.WindowModal)
 570                 self._window.setWindowTitle("%s - Categories" % constants.__pretty_app_name__)
 571                 self._window.setWindowIcon(QtGui.QIcon(self._app.appIconPath))
 572                 self._window.setCentralWidget(centralWidget)
 573
 574                 self._chooseFavoritesAction = QtGui.QAction(None)
 575                 self._chooseFavoritesAction.setText("Select Favorites")
 576                 self._chooseFavoritesAction.setShortcut(QtGui.QKeySequence("CTRL+f"))
 577                 self._chooseFavoritesAction.triggered.connect(self._on_choose_favorites)
 578
 579                 self._app.showFavoritesAction.toggled.connect(self._on_show_favorites)
 580
 581                 self._closeWindowAction = QtGui.QAction(None)
 582                 self._closeWindowAction.setText("Window")
 583                 self._closeWindowAction.setShortcut(QtGui.QKeySequence("CTRL+w"))
 584                 self._closeWindowAction.triggered.connect(self._on_close_window)
 585
 586                 fileMenu = self._window.menuBar().addMenu("&Units")
 587                 fileMenu.addAction(self._chooseFavoritesAction)
 588                 fileMenu.addAction(self._closeWindowAction)
 589                 fileMenu.addAction(self._app.quitAction)
 590
 591                 viewMenu = self._window.menuBar().addMenu("&View")
 592                 viewMenu.addAction(self._app.showFavoritesAction)
 593                 viewMenu.addSeparator()
 594                 viewMenu.addAction(self._app.jumpAction)
 595                 viewMenu.addAction(self._app.recentAction)
 596                 viewMenu.addSeparator()
 597                 viewMenu.addAction(self._app.fullscreenAction)
 598
 599                 self._window.addAction(self._app.logAction)
 600
 601                 self._update_favorites()
 602                 self.set_fullscreen(self._app.fullscreenAction.isChecked())
 603                 self._window.show()
 604
 605         @property
 606         def window(self):
 607                 return self._window
 608
 609         def walk_children(self):
 610                 if self._unitWindow is not None:
 611                         yield self._unitWindow
 612                 if self._favoritesWindow is not None:
 613                         yield self._favoritesWindow
 614
 615         def close(self):
 616                 for child in self.walk_children():
 617                         child.close()
 618                 self._window.close()
 619
 620         def select_category(self, categoryName):
 621                 for child in self.walk_children():
 622                         child.close()
 623                 self._unitWindow = UnitWindow(self._window, categoryName, self._app)
 624                 self._unitWindow.window.destroyed.connect(self._on_child_close)
 625                 # @todo Add scroll to category
 626                 return self._unitWindow
 627
 628         def set_fullscreen(self, isFullscreen):
 629                 if isFullscreen:
 630                         self._window.showFullScreen()
 631                 else:
 632                         self._window.showNormal()
 633                 for child in self.walk_children():
 634                         child.set_fullscreen(isFullscreen)
 635
 636         def _update_favorites(self):
 637                 if self._app.showFavoritesAction.isChecked():
 638                         assert self._categories.topLevelItemCount() == len(unit_data.UNIT_CATEGORIES)
 639                         for i, catName in enumerate(unit_data.UNIT_CATEGORIES):
 640                                 if catName in self._app.hiddenCategories:
 641                                         self._categories.setRowHidden(i, self._categories.rootIndex(), True)
 642                                 else:
 643                                         self._categories.setRowHidden(i, self._categories.rootIndex(), False)
 644                 else:
 645                         for i in xrange(self._categories.topLevelItemCount()):
 646                                 self._categories.setRowHidden(i, self._categories.rootIndex(), False)
 647
 648         @misc_utils.log_exception(_moduleLogger)
 649         def _on_choose_favorites(self, obj = None):
 650                 assert self._favoritesWindow is None
 651                 self._favoritesWindow = FavoriteCategoriesWindow(
 652                         self._window,
 653                         self._app,
 654                         unit_data.UNIT_CATEGORIES,
 655                         self._app.hiddenCategories
 656                 )
 657                 self._favoritesWindow.window.destroyed.connect(self._on_close_favorites)
 658                 return self._favoritesWindow
 659
 660         @misc_utils.log_exception(_moduleLogger)
 661         def _on_show_favorites(self, checked = True):
 662                 if checked:
 663                         assert self._categories.topLevelItemCount() == len(unit_data.UNIT_CATEGORIES)
 664                         for i, catName in enumerate(unit_data.UNIT_CATEGORIES):
 665                                 if catName in self._app.hiddenCategories:
 666                                         self._categories.setRowHidden(i, self._categories.rootIndex(), True)
 667                 else:
 668                         for i in xrange(self._categories.topLevelItemCount()):
 669                                 self._categories.setRowHidden(i, self._categories.rootIndex(), False)
 670
 671         @misc_utils.log_exception(_moduleLogger)
 672         def _on_close_favorites(self, obj = None):
 673                 self._favoritesWindow = None
 674                 self._update_favorites()
 675
 676         @misc_utils.log_exception(_moduleLogger)
 677         def _on_child_close(self, obj = None):
 678                 self._unitWindow = None
 679
 680         @misc_utils.log_exception(_moduleLogger)
 681         def _on_close_window(self, checked = True):
 682                 self.close()
 683
 684         @misc_utils.log_exception(_moduleLogger)
 685         def _on_category_clicked(self, item, columnIndex):
 686                 categoryName = unicode(item.text(0))
 687                 self.select_category(categoryName)
 688
 689
 690 class UnitData(object):
 691
 692         HEADERS = ["Name", "Value", "", "Unit"]
 693         ALIGNMENT = [QtCore.Qt.AlignLeft, QtCore.Qt.AlignRight, QtCore.Qt.AlignLeft, QtCore.Qt.AlignLeft]
 694         NAME_COLUMN = 0
 695         VALUE_COLUMN_0 = 1
 696         VALUE_COLUMN_1 = 2
 697         UNIT_COLUMN = 3
 698
 699         def __init__(self, name, unit, description, conversion):
 700                 self._name = name
 701                 self._unit = unit
 702                 self._description = description
 703                 self._conversion = conversion
 704
 705                 self._value = 0.0
 706                 self._integerDisplay, self._fractionalDisplay = split_number(self._value)
 707
 708         @property
 709         def name(self):
 710                 return self._name
 711
 712         @property
 713         def value(self):
 714                 return self._value
 715
 716         def update_value(self, newValue):
 717                 self._value = newValue
 718                 self._integerDisplay, self._fractionalDisplay = split_number(newValue)
 719
 720         @property
 721         def unit(self):
 722                 return self._unit
 723
 724         @property
 725         def conversion(self):
 726                 return self._conversion
 727
 728         def data(self, column):
 729                 try:
 730                         return [self._name, self._integerDisplay, self._fractionalDisplay, self._unit][column]
 731                 except IndexError:
 732                         return None
 733
 734
 735 class UnitModel(QtCore.QAbstractItemModel):
 736
 737         def __init__(self, categoryName, parent=None):
 738                 super(UnitModel, self).__init__(parent)
 739                 self._categoryName = categoryName
 740                 self._unitData = unit_data.UNIT_DESCRIPTIONS[self._categoryName]
 741
 742                 self._children = []
 743                 for key in unit_data.get_units(self._categoryName):
 744                         conversion, unit, description = self._unitData[key]
 745                         self._children.append(UnitData(key, unit, description, conversion))
 746                 self._sortSettings = None
 747
 748         @misc_utils.log_exception(_moduleLogger)
 749         def columnCount(self, parent):
 750                 if parent.isValid():
 751                         return 0
 752                 else:
 753                         return len(UnitData.HEADERS)
 754
 755         @misc_utils.log_exception(_moduleLogger)
 756         def data(self, index, role):
 757                 if not index.isValid():
 758                         return None
 759                 elif role == QtCore.Qt.TextAlignmentRole:
 760                         return UnitData.ALIGNMENT[index.column()]
 761                 elif role != QtCore.Qt.DisplayRole:
 762                         return None
 763
 764                 item = index.internalPointer()
 765                 if isinstance(item, UnitData):
 766                         return item.data(index.column())
 767                 elif item is UnitData.HEADERS:
 768                         return item[index.column()]
 769
 770         @misc_utils.log_exception(_moduleLogger)
 771         def sort(self, column, order = QtCore.Qt.AscendingOrder):
 772                 self._sortSettings = column, order
 773                 isReverse = order == QtCore.Qt.AscendingOrder
 774                 if column == UnitData.NAME_COLUMN:
 775                         key_func = lambda item: item.name
 776                 elif column in [UnitData.VALUE_COLUMN_0, UnitData.VALUE_COLUMN_1]:
 777                         key_func = lambda item: item.value
 778                 elif column == UnitData.UNIT_COLUMN:
 779                         key_func = lambda item: item.unit
 780                 self._children.sort(key=key_func, reverse = isReverse)
 781
 782                 self._all_changed()
 783
 784         @misc_utils.log_exception(_moduleLogger)
 785         def flags(self, index):
 786                 if not index.isValid():
 787                         return QtCore.Qt.NoItemFlags
 788
 789                 return QtCore.Qt.ItemIsEnabled | QtCore.Qt.ItemIsSelectable
 790
 791         @misc_utils.log_exception(_moduleLogger)
 792         def headerData(self, section, orientation, role):
 793                 if orientation == QtCore.Qt.Horizontal and role == QtCore.Qt.DisplayRole:
 794                         return UnitData.HEADERS[section]
 795
 796                 return None
 797
 798         @misc_utils.log_exception(_moduleLogger)
 799         def index(self, row, column, parent):
 800                 if not self.hasIndex(row, column, parent):
 801                         return QtCore.QModelIndex()
 802
 803                 if parent.isValid():
 804                         return QtCore.QModelIndex()
 805
 806                 parentItem = UnitData.HEADERS
 807                 childItem = self._children[row]
 808                 if childItem:
 809                         return self.createIndex(row, column, childItem)
 810                 else:
 811                         return QtCore.QModelIndex()
 812
 813         @misc_utils.log_exception(_moduleLogger)
 814         def parent(self, index):
 815                 if not index.isValid():
 816                         return QtCore.QModelIndex()
 817
 818                 childItem = index.internalPointer()
 819                 if isinstance(childItem, UnitData):
 820                         return QtCore.QModelIndex()
 821                 elif childItem is UnitData.HEADERS:
 822                         return None
 823
 824         @misc_utils.log_exception(_moduleLogger)
 825         def rowCount(self, parent):
 826                 if 0 < parent.column():
 827                         return 0
 828
 829                 if not parent.isValid():
 830                         return len(self._children)
 831                 else:
 832                         return len(self._children)
 833
 834         def get_unit(self, index):
 835                 assert 0 <= index
 836                 return self._children[index]
 837
 838         def get_unit_names(self):
 839                 for child in self._children:
 840                         yield child.name
 841
 842         def index_unit(self, unitName):
 843                 for i, child in enumerate(self._children):
 844                         if child.name == unitName:
 845                                 return i
 846                 else:
 847                         raise RuntimeError("Unit not found")
 848
 849         def update_values(self, fromIndex, userInput):
 850                 value = self._sanitize_value(userInput)
 851                 func, arg = self._children[fromIndex].conversion
 852                 base = func.to_base(value, arg)
 853                 for i, child in enumerate(self._children):
 854                         if i == fromIndex:
 855                                 continue
 856                         func, arg = child.conversion
 857                         newValue = func.from_base(base, arg)
 858                         child.update_value(newValue)
 859
 860                 if self._sortSettings is not None:
 861                         self.sort(*self._sortSettings)
 862                 self._all_changed()
 863
 864         def __len__(self):
 865                 return len(self._children)
 866
 867         def _all_changed(self):
 868                 topLeft = self.createIndex(0, 0, self._children[0])
 869                 bottomRight = self.createIndex(len(self._children)-1, len(UnitData.HEADERS)-1, self._children[-1])
 870                 self.dataChanged.emit(topLeft, bottomRight)
 871
 872         def _sanitize_value(self, userEntry):
 873                 if self._categoryName == "Computer Numbers":
 874                         if userEntry == '':
 875                                 value = '0'
 876                         else:
 877                                 value = userEntry
 878                 else:
 879                         if userEntry == '':
 880                                 value = 0.0
 881                         else:
 882                                 value = float(userEntry)
 883                 return value
 884
 885
 886 class UnitWindow(object):
 887
 888         def __init__(self, parent, category, app):
 889                 self._app = app
 890                 self._categoryName = category
 891                 self._selectedIndex = 0
 892                 self._favoritesWindow = None
 893
 894                 self._selectedUnitName = QtGui.QLabel()
 895                 self._selectedUnitValue = QtGui.QLineEdit()
 896                 self._selectedUnitValue.textEdited.connect(self._on_value_edited)
 897                 self._selectedUnitSymbol = QtGui.QLabel()
 898
 899                 self._selectedUnitLayout = QtGui.QHBoxLayout()
 900                 self._selectedUnitLayout.addWidget(self._selectedUnitName)
 901                 self._selectedUnitLayout.addWidget(self._selectedUnitValue)
 902                 self._selectedUnitLayout.addWidget(self._selectedUnitSymbol)
 903
 904                 self._unitsModel = UnitModel(self._categoryName)
 905                 self._unitsView = QtGui.QTreeView()
 906                 self._unitsView.setModel(self._unitsModel)
 907                 self._unitsView.clicked.connect(self._on_unit_clicked)
 908                 self._unitsView.setUniformRowHeights(True)
 909                 self._unitsView.header().setSortIndicatorShown(True)
 910                 self._unitsView.header().setClickable(True)
 911                 self._unitsView.setSortingEnabled(True)
 912                 self._unitsView.setAlternatingRowColors(True)
 913                 if True:
 914                         self._unitsView.setHeaderHidden(True)
 915
 916                 self._layout = QtGui.QVBoxLayout()
 917                 self._layout.addLayout(self._selectedUnitLayout)
 918                 self._layout.addWidget(self._unitsView)
 919
 920                 centralWidget = QtGui.QWidget()
 921                 centralWidget.setLayout(self._layout)
 922
 923                 self._window = QtGui.QMainWindow(parent)
 924                 self._window.setAttribute(QtCore.Qt.WA_DeleteOnClose, True)
 925                 if parent is not None:
 926                         self._window.setWindowModality(QtCore.Qt.WindowModal)
 927                 self._window.setWindowTitle("%s - %s" % (constants.__pretty_app_name__, category))
 928                 self._window.setWindowIcon(QtGui.QIcon(app.appIconPath))
 929                 self._window.setCentralWidget(centralWidget)
 930
 931                 defaultUnitName = self._app.get_recent_unit(self._categoryName)
 932                 if defaultUnitName:
 933                         self.select_unit(defaultUnitName)
 934                 else:
 935                         self._select_unit(0)
 936                 self._unitsModel.sort(UnitData.VALUE_COLUMN_0)
 937
 938                 self._sortActionGroup = QtGui.QActionGroup(None)
 939                 self._sortByNameAction = QtGui.QAction(self._sortActionGroup)
 940                 self._sortByNameAction.setText("Sort By Name")
 941                 self._sortByNameAction.setStatusTip("Sort the units by name")
 942                 self._sortByNameAction.setToolTip("Sort the units by name")
 943                 self._sortByNameAction.setCheckable(True)
 944                 self._sortByValueAction = QtGui.QAction(self._sortActionGroup)
 945                 self._sortByValueAction.setText("Sort By Value")
 946                 self._sortByValueAction.setStatusTip("Sort the units by value")
 947                 self._sortByValueAction.setToolTip("Sort the units by value")
 948                 self._sortByValueAction.setCheckable(True)
 949                 self._sortByUnitAction = QtGui.QAction(self._sortActionGroup)
 950                 self._sortByUnitAction.setText("Sort By Unit")
 951                 self._sortByUnitAction.setStatusTip("Sort the units by unit")
 952                 self._sortByUnitAction.setToolTip("Sort the units by unit")
 953                 self._sortByUnitAction.setCheckable(True)
 954
 955                 self._sortByValueAction.setChecked(True)
 956
 957                 self._chooseFavoritesAction = QtGui.QAction(None)
 958                 self._chooseFavoritesAction.setText("Select Favorites")
 959                 self._chooseFavoritesAction.setShortcut(QtGui.QKeySequence("CTRL+f"))
 960                 self._chooseFavoritesAction.triggered.connect(self._on_choose_favorites)
 961
 962                 self._app.showFavoritesAction.toggled.connect(self._on_show_favorites)
 963
 964                 self._previousUnitAction = QtGui.QAction(None)
 965                 self._previousUnitAction.setText("Previous Unit")
 966                 self._previousUnitAction.setShortcut(QtGui.QKeySequence("Up"))
 967                 self._previousUnitAction.triggered.connect(self._on_previous_unit)
 968
 969                 self._nextUnitAction = QtGui.QAction(None)
 970                 self._nextUnitAction.setText("Next Unit")
 971                 self._nextUnitAction.setShortcut(QtGui.QKeySequence("Down"))
 972                 self._nextUnitAction.triggered.connect(self._on_next_unit)
 973
 974                 self._closeWindowAction = QtGui.QAction(None)
 975                 self._closeWindowAction.setText("Close Window")
 976                 self._closeWindowAction.setShortcut(QtGui.QKeySequence("CTRL+w"))
 977                 self._closeWindowAction.triggered.connect(self._on_close_window)
 978
 979                 fileMenu = self._window.menuBar().addMenu("&Units")
 980                 fileMenu.addAction(self._chooseFavoritesAction)
 981                 fileMenu.addAction(self._closeWindowAction)
 982                 fileMenu.addAction(self._app.quitAction)
 983
 984                 viewMenu = self._window.menuBar().addMenu("&View")
 985                 viewMenu.addAction(self._app.showFavoritesAction)
 986                 viewMenu.addSeparator()
 987                 viewMenu.addAction(self._sortByNameAction)
 988                 viewMenu.addAction(self._sortByValueAction)
 989                 viewMenu.addAction(self._sortByUnitAction)
 990                 viewMenu.addSeparator()
 991                 viewMenu.addAction(self._app.jumpAction)
 992                 viewMenu.addAction(self._app.recentAction)
 993                 viewMenu.addSeparator()
 994                 viewMenu.addAction(self._app.fullscreenAction)
 995
 996                 self._sortByNameAction.triggered.connect(self._on_sort_by_name)
 997                 self._sortByValueAction.triggered.connect(self._on_sort_by_value)
 998                 self._sortByUnitAction.triggered.connect(self._on_sort_by_unit)
 999
1000                 self._window.addAction(self._app.logAction)
1001                 self._window.addAction(self._nextUnitAction)
1002                 self._window.addAction(self._previousUnitAction)
1003                 self._window.addAction(self._chooseFavoritesAction)
1004
1005                 self._update_favorites()
1006                 self.set_fullscreen(self._app.fullscreenAction.isChecked())
1007                 self._window.show()
1008
1009         @property
1010         def window(self):
1011                 return self._window
1012
1013         def close(self):
1014                 for child in self.walk_children():
1015                         child.close()
1016                 self._window.close()
1017
1018         def set_fullscreen(self, isFullscreen):
1019                 if isFullscreen:
1020                         self._window.showFullScreen()
1021                 else:
1022                         self._window.showNormal()
1023
1024         def select_unit(self, unitName):
1025                 index = self._unitsModel.index_unit(unitName)
1026                 self._select_unit(index)
1027
1028         def walk_children(self):
1029                 if self._favoritesWindow is not None:
1030                         yield self._favoritesWindow
1031
1032         def _update_favorites(self):
1033                 if self._app.showFavoritesAction.isChecked():
1034                         unitNames = list(self._unitsModel.get_unit_names())
1035                         for i, unitName in enumerate(unitNames):
1036                                 if unitName in self._app.get_hidden_units(self._categoryName):
1037                                         self._unitsView.setRowHidden(i, self._unitsView.rootIndex(), True)
1038                                 else:
1039                                         self._unitsView.setRowHidden(i, self._unitsView.rootIndex(), False)
1040                 else:
1041                         for i in xrange(len(self._unitsModel)):
1042                                 self._unitsView.setRowHidden(i, self._unitsView.rootIndex(), False)
1043
1044         @misc_utils.log_exception(_moduleLogger)
1045         def _on_choose_favorites(self, obj = None):
1046                 assert self._favoritesWindow is None
1047                 self._favoritesWindow = FavoriteCategoriesWindow(
1048                         self._window,
1049                         self._app,
1050                         unit_data.get_units(self._categoryName),
1051                         self._app.get_hidden_units(self._categoryName)
1052                 )
1053                 self._favoritesWindow.window.destroyed.connect(self._on_close_favorites)
1054                 return self._favoritesWindow
1055
1056         @misc_utils.log_exception(_moduleLogger)
1057         def _on_show_favorites(self, checked = True):
1058                 if checked:
1059                         unitNames = list(self._unitsModel.get_unit_names())
1060                         for i, unitName in enumerate(unitNames):
1061                                 if unitName in self._app.get_hidden_units(self._categoryName):
1062                                         self._unitsView.setRowHidden(i, self._unitsView.rootIndex(), True)
1063                 else:
1064                         for i in xrange(len(self._unitsModel)):
1065                                 self._unitsView.setRowHidden(i, self._unitsView.rootIndex(), False)
1066
1067         @misc_utils.log_exception(_moduleLogger)
1068         def _on_close_favorites(self, obj = None):
1069                 self._favoritesWindow = None
1070                 self._update_favorites()
1071
1072         @misc_utils.log_exception(_moduleLogger)
1073         def _on_previous_unit(self, checked = True):
1074                 self._select_unit(self._selectedIndex - 1)
1075
1076         @misc_utils.log_exception(_moduleLogger)
1077         def _on_next_unit(self, checked = True):
1078                 self._select_unit(self._selectedIndex + 1)
1079
1080         @misc_utils.log_exception(_moduleLogger)
1081         def _on_close_window(self, checked = True):
1082                 self.close()
1083
1084         @misc_utils.log_exception(_moduleLogger)
1085         def _on_sort_by_name(self, checked = False):
1086                 self._unitsModel.sort(UnitData.NAME_COLUMN, QtCore.Qt.DescendingOrder)
1087
1088         @misc_utils.log_exception(_moduleLogger)
1089         def _on_sort_by_value(self, checked = False):
1090                 self._unitsModel.sort(UnitData.VALUE_COLUMN_0)
1091
1092         @misc_utils.log_exception(_moduleLogger)
1093         def _on_sort_by_unit(self, checked = False):
1094                 self._unitsModel.sort(UnitData.UNIT_COLUMN, QtCore.Qt.DescendingOrder)
1095
1096         @misc_utils.log_exception(_moduleLogger)
1097         def _on_unit_clicked(self, index):
1098                 self._select_unit(index.row())
1099
1100         @misc_utils.log_exception(_moduleLogger)
1101         def _on_value_edited(self, *args):
1102                 userInput = self._selectedUnitValue.text()
1103                 self._unitsModel.update_values(self._selectedIndex, str(userInput))
1104
1105         def _select_unit(self, index):
1106                 unit = self._unitsModel.get_unit(index)
1107                 self._selectedUnitName.setText(unit.name)
1108                 self._selectedUnitValue.setText(str(unit.value))
1109                 self._selectedUnitSymbol.setText(unit.unit)
1110
1111                 self._selectedIndex = index
1112                 qindex = self._unitsModel.createIndex(index, 0, self._unitsModel.get_unit(index))
1113                 self._unitsView.scrollTo(qindex)
1114                 self._app.add_recent(self._categoryName, self._unitsModel.get_unit(index).name)
1115
1116
1117 def run_gonvert():
1118         app = QtGui.QApplication([])
1119         handle = Gonvert(app)
1120         return app.exec_()
1121
1122
1123 if __name__ == "__main__":
1124         logging.basicConfig(level = logging.DEBUG)
1125         try:
1126                 os.makedirs(constants._data_path_)
1127         except OSError, e:
1128                 if e.errno != 17:
1129                         raise
1130
1131         val = run_gonvert()
1132         sys.exit(val)